[1F5-GS-5] Agents

[1F5-GS-5-03] Effect of blending inheritance in experimental evolution of music styles using automatic composition

〇Eita Nakamura¹, Hitomi Kaneko², Takayuki Itoh³, Kunihiko Kaneko⁴ (1. Kyoto University, 2. Tokyo University of the Arts, 3. Ochanomizu University, 4. Niels Bohr Institute)

Keywords:Evolutionary computation, Automatic music generation, Cultural evolution

We report results of an experimental evolution to study the mechanism of music style evolution. Creative cultures including music are developed by descent-with-modification processes of knowledge about creating complex artifacts, but how new creation styles emerge and the influence of listeners/consumers through a social evaluation process are not well understood. To study these problems, we conducted an experiment where a population of automatic composition models, which simulate a population of human creators, evolves while being evaluated by many listeners. As a result, we found that adaptive evolutions of music styles can occur when blending inheritance of high-dimensional statistics representing composition styles is incorporated in the generation update process. A significant difference in musical preference depending on musical experience was also found. The results suggest a possibility of constructing a system of automatic composition in a new and preferred music style by the experimental framework.